PIC17LC756AT-08I/L - 8-bit OTP MCU, 32KB, 8MHz, 68-PLCC | Microchip
MPN: PIC17LC756AT-08I/L ✓ פעילPIC17LC756AT-08I/L סקירה
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripheral interfaces into one device. The PIC17 family sits at the high end of Microchip's 8-bit portfolio, targeting applications that require more memory, I/O, and processing bandwidth than the mid-range PIC16 series can deliver, while remaining considerably simpler than 16-bit dsPIC or 32-bit ARM Cortex-M parts. The LC suffix designates a low-voltage CMOS variant supporting operation from 2.5 V to 5.5 V, broadening its usefulness in mixed-voltage and battery-tolerant designs.
Key features include a 12-channel, 10-bit Analog-to-Digital Converter (ADC) for sensor acquisition, three serial communication peripherals (I2C, SPI, and UART/USART), 50 digital I/O lines, and an industrial-grade operating temperature range of -40 °C to +85 °C. The wide supply voltage window (2.5 V to 5.5 V) and the OTP-based program memory make the PIC17LC756AT-08I/L appropriate for moderate-volume embedded products that benefit from a flexible, reprogrammable development cycle followed by a locked production code.
Architecturally the device combines an enhanced PIC17 RISC core with Harvard-style separate program and data buses, a high-current drive capability on selected I/O pins, and capture/compare/PWM (CCP) peripherals suitable for motor and timer control. The 32KB OTP program memory is organized as 16K x 16 words to match the 16-bit-wide instruction fetch path, while the 902-byte RAM is byte-addressable for efficient C-compiler code generation.
Typical applications include industrial automation controllers, consumer-electronics user-interface panels, motor-control subsystems, sensor hubs with on-board ADC, and legacy embedded designs that are still in production and require a long-life-cycle, RoHS-compliant 8-bit MCU with a known instruction set. Designers familiar with PIC12/PIC16/PIC17 assembly or the MPLAB C17 toolchain can port code with minimal effort.
When designing with this part, note that OTP memory can be programmed only once - prototypes should be built with windowed (JW) or UV-erasable variants first, then transitioned to the PIC17LC756AT-08I/L for production. Ensure that the 68-PLCC socket or footprint is laid out with adequate clearance for tooling and consider the device's industrial temperature rating for outdoor or factory environments.
This page synthesizes distributor pricing from DigiKey, Mouser, and Octopart, lists drop-in replacement MPNs from the same PIC17 family, and combines practical design notes not all gathered in the manufacturer datasheet alone.
חלופות תחליף ישיר עבור PIC17LC756AT-08I/L — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC17LC756AT-08I/L (אותו גורם צורה וטביעת רגל) — שונים ב Package, Data Bus Width, ADC, Instruction Cycle Time, I/O Pins.
PIC17C756AT-33I/L
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC17LC756A-08I/L
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC17LC756AT-08/L
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC17LC756AT-08I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC17LC752T-08I/L
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC17LC756AT-08I/L דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | 8-bit PIC17 RISC |
| Family | PIC® 17C |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 32 KB (16K x 16) |
| RAM Size | 902 bytes |
| תדר שעון מקסימלי | 8 MHz |
| Instruction Cycle Time | 121 ns (single cycle, 8 MHz) |
| רוחב אפיק נתונים | 16-bit (instruction fetch) / 8-bit (data) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 50 (33 I/O ports per datasheet; verify in datasheet for full 50-pin count) |
| ADC | 12-channel, 10-bit |
| Communication Peripherals | I2C, SPI, UART/USART |
| טווח טמפרטורת פעולה | -40 °C to +85 °C (Industrial, "I") |
| מארז | 68-PLCC (24.23 x 24.23 mm) |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant |
תצורת פינים של PIC17LC756AT-08I/L
| פין 1 | PWM1 — PWM output channel 1 |
| פין 2 | PWM2 — PWM output channel 2 |
| פין 3 | PWM3 — PWM output channel 3 |
| פין 4 | PWM4 — PWM output channel 4 |
| פין 5 | RA0/AN0 — PORTA bit 0 / ADC input channel 0 |
| פין 6 | RA1/AN1 — PORTA bit 1 / ADC input channel 1 |
| פין 7 | RA2/AN2 — PORTA bit 2 / ADC input channel 2 |
| פין 8 | RA3/AN3 — PORTA bit 3 / ADC input channel 3 |
| פין 9 | RA4/AN4 — PORTA bit 4 / ADC input channel 4 |
| פין 10 | RA5/AN5 — PORTA bit 5 / ADC input channel 5 |
| פין 11 | VSS — Ground reference |
| פין 12 | VDD — Positive supply voltage (2.5V to 5.5V) |
| פין 13 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| פין 14 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| פין 15 | RB0/INT — PORTB bit 0 / external interrupt |
| פין 16 | RB1 — PORTB bit 1 |
| פין 17 | RB2 — PORTB bit 2 |
| פין 18 | RB3 — PORTB bit 3 |
| פין 19 | RB4 — PORTB bit 4 |
| פין 20 | RB5 — PORTB bit 5 |
| פין 21 | RB6 — PORTB bit 6 |
| פין 22 | RB7 — PORTB bit 7 |
| פין 23 | VSS — Ground reference |
| פין 24 | VDD — Positive supply voltage |
| פין 25 | RC0 — PORTC bit 0 |
| פין 26 | RC1 — PORTC bit 1 |
| פין 27 | RC2 — PORTC bit 2 |
| פין 28 | RC3 — PORTC bit 3 |
| פין 29 | RC4 — PORTC bit 4 |
| פין 30 | RC5 — PORTC bit 5 |
| פין 31 | RC6 — PORTC bit 6 |
| פין 32 | RC7 — PORTC bit 7 |
| פין 33 | VSS — Ground reference |
| פין 34 | VDD — Positive supply voltage |
| פין 35 | RD0 — PORTD bit 0 |
| פין 36 | RD1 — PORTD bit 1 |
| פין 37 | RD2 — PORTD bit 2 |
| פין 38 | RD3 — PORTD bit 3 |
| פין 39 | RD4 — PORTD bit 4 |
| פין 40 | RD5 — PORTD bit 5 |
| פין 41 | RD6 — PORTD bit 6 |
| פין 42 | RD7 — PORTD bit 7 |
| פין 43 | VSS — Ground reference |
| פין 44 | VDD — Positive supply voltage |
| פין 45 | RE0/AN6 — PORTE bit 0 / ADC input channel 6 |
| פין 46 | RE1/AN7 — PORTE bit 1 / ADC input channel 7 |
| פין 47 | RE2/AN8 — PORTE bit 2 / ADC input channel 8 |
| פין 48 | RE3/AN9 — PORTE bit 3 / ADC input channel 9 |
| פין 49 | RE4/AN10 — PORTE bit 4 / ADC input channel 10 |
| פין 50 | RE5/AN11 — PORTE bit 5 / ADC input channel 11 |
| פין 51 | PWM5 — PWM output channel 5 |
| פין 52 | PWM6 — PWM output channel 6 |
| פין 53 | PWM7 — PWM output channel 7 |
| פין 54 | PWM8 — PWM output channel 8 |
| פין 55 | RX/DT — UART receive / data line |
| פין 56 | TX/CK — UART transmit / clock line |
| פין 57 | SCL — I2C clock line |
| פין 58 | SDA — I2C data line |
| פין 59 | SCK — SPI clock line |
| פין 60 | SDI — SPI data input |
| פין 61 | SDO — SPI data output |
| פין 62 | SS — SPI slave select |
| פין 63 | CCP1 — Capture/Compare/PWM channel 1 |
| פין 64 | CCP2 — Capture/Compare/PWM channel 2 |
| פין 65 | MCLR/VPP — Master clear reset / programming voltage |
| פין 66 | T0CKI — Timer 0 clock input |
| פין 67 | VSS — Ground reference |
| פין 68 | VDD — Positive supply voltage |
יישומים טיפוסיים
PIC17LC756AT-08I/L מתאים עבור 6 יישוםs: Industrial Automation Controller, Consumer Electronics User Interface Panel, Sensor Hub with On-Board ADC, Motor Control Subsystem, Medical Monitoring Device (Non-Critical), Legacy Embedded System Maintenance.
Industrial Automation Controller
The PIC17LC756AT-08I/L fits industrial automation controllers thanks to its 8 MHz PIC17 RISC core, 32 KB OTP program memory, and 902-byte RAM, which together support PID loops, multi-axis sequencing, and Modbus-style protocol stacks within a single chip. The 50 digital I/O pins and integrated 12-channel 10-bit ADC allow direct connection to limit switches, thermocouples via front-end amplifiers, and 4-20 mA loop sensors without external glue logic. The -40 °C to +85 °C industrial temperature rating and 2.5 V to 5.5 V supply range let the part operate from 24 V-to-5 V industrial backplanes as well as battery-backed control panels. UART, SPI, and I2C peripherals enable fieldbus expansion via transceiver ICs.
מומלץ
Consumer Electronics User Interface Panel
The PIC17LC756AT-08I/L drives consumer-electronics user-interface panels such as appliance controllers, HVAC thermostats, and audio-system front panels by combining generous program memory (32 KB) with abundant I/O for keypads, displays, and rotary encoders. The 3.3 V-or-5 V supply flexibility allows direct interface with character LCDs and OLED modules that prefer 3.3 V rails, while the ADC handles resistive-touch or potentiometer inputs. The PIC17 instruction set and MPLAB toolchain shorten development cycles for cost-sensitive consumer products that must ship across multiple SKUs sharing a common firmware base. Surface-mount 68-PLCC packaging supports automated PCB assembly on high-volume consumer lines.
מומלץ
Sensor Hub with On-Board ADC
The PIC17LC756AT-08I/L serves as a multi-sensor data-acquisition hub because of its 12-channel 10-bit ADC, 50 I/O lines, and 902-byte RAM for buffering samples before forwarding to a host via UART, SPI, or I2C. Industrial-grade -40 °C to +85 °C operation means the part can sit outdoors in weather-station or building-automation sensor pods, and the 2.5 V minimum supply is friendly to battery or energy-harvesting rails when paired with a boost converter. The 8 MHz core executes oversampling and digital-filtering routines with deterministic cycle counts, and the 32 KB OTP holds full look-up tables for sensor linearization and unit conversion.
מומלץ
Motor Control Subsystem
In brushed-DC and stepper motor control subsystems, the PIC17LC756AT-08I/L provides the response time and PWM resolution required for closed-loop speed or position control. The 8 MHz instruction cycle (121 ns) keeps phase-margin tight in 20 kHz PWM loops, and the capture/compare/PWM peripherals generate complementary drive waveforms for H-bridge drivers without software overhead. The ADC samples shunt resistors for current-mode control, while the UART exposes the controller to a host PLC or motion controller. Industrial temperature grade and the 68-PLCC ruggedized package suit the part for factory-floor inverter cabinets and machine-tool servo boards.
מומלץ
Medical Monitoring Device (Non-Critical)
For non-critical medical monitoring devices such as fitness equipment heart-rate displays, blood-pressure cuffs, and pulse oximeters (non-diagnostic), the PIC17LC756AT-08I/L offers ample program memory for filtering algorithms and on-screen menus while keeping the bill-of-materials cost low. The 12-channel ADC reads multiple bio-sensor signals, the UART streams data to a paired Bluetooth or Wi-Fi module, and the 2.5 V to 5.5 V supply tolerance simplifies battery-power designs (2x AA cells). Designers should note that this part is not FDA-qualified for life-support or diagnostic applications - refer to medical-grade Microchip families for those use cases.
מומלץ
Legacy Embedded System Maintenance
The PIC17LC756AT-08I/L is frequently chosen to sustain legacy embedded products whose original 8-bit MCU is still required for firmware compatibility or regulatory re-certification. Because the instruction set, peripheral register map, and 68-PLCC footprint match other PIC17C derivatives, designers can swap the silicon revision without rewriting application code. The long-life-cycle status of the PIC17 family and Microchip's continued production support through 2026 and beyond make this part a low-risk choice for industrial machinery, avionics subsystems, and medical devices with multi-decade service obligations.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC17LC756AT-08I/L — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC17C756AT-33I/L | PIC17LC756A-08I/L | PIC17LC756AT-08/L | PIC17LC756AT-08I/PT | PIC17LC752T-08I/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 68-PLCC (24.23x24.23) | 68-PLCC (24.23x24.23) - same | 68-PLCC (24.23x24.23) - same | 68-PLCC (24.23x24.23) - same | 68-TQFP | 68-PLCC (24.23x24.23) - same |
| Core | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC | 8-bit PIC17 RISC |
| Program Memory | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 32 KB OTP | 16 KB OTP |
| RAM | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 902 bytes | 678 bytes |
| Max Clock Frequency | 8 MHz | 33 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Supply Voltage | 2.5 V to 5.5 V | 4.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | 0 °C to +70 °C (Commercial) | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) |
| ADC | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit | 12-ch, 10-bit |
מבדילים עיקריים
- Same 32 KB OTP memory and 902-byte RAM across the LC family (לעומתPIC17LC752T-08I/L)
- Low-voltage CMOS (LC) variant supports 2.5 V minimum rail (לעומתPIC17C756AT-33I/L)
- Industrial -40 °C to +85 °C temperature grade (לעומתPIC17LC756AT-08/L)
הערות תכנון
The PIC17LC756AT-08I/L tolerates 2.5 V to 5.5 V on VDD. Place a 100 nF decoupling capacitor as close as possible to each VDD pin (4 VDD pins on the 68-PLCC) and add a single 10 µF bulk capacitor at the package entry point. The LC low-voltage variant has lower quiescent current than the standard 17C part and is preferred for battery or energy-harvesting supplies.
The 68-PLCC footprint requires a JEDEC-standard land pattern with J-leads on all four sides. Allow at least 2 mm of clearance around the package for socket tooling if you plan to use a PLCC socket during prototype bring-up. Keep clock traces (OSC1/OSC2) short and guard them from switching I/O to avoid injection of noise into the oscillator block.
Because the part uses OTP program memory, you cannot erase and re-program it once written. Develop firmware on a windowed (JW) or UV-erasable PIC17 variant, then commit the final code to the PIC17LC756AT-08I/L for production. Do not exceed the maximum supply voltage of 5.5 V even briefly - the OTP cell programming circuitry shares VDD and may be damaged by transients above the rating.
When routing the 12 ADC channels, dedicate one analog ground (VSS) pin and one analog VDD pin to the ADC power path and keep digital return currents off the analog ground star point. Use guard traces around high-impedance analog inputs (RA0-RA5 / RE0-RE5) to minimize leakage-induced offset errors on the 10-bit ADC.
מידע על תאימות
RoHS and REACH compliance confirmed via Microchip product page and DigiKey listing. This is an industrial-grade part, not AEC-Q100 qualified for automotive - consider PIC18 or dsPIC33 automotive families if automotive qualification is required.
